Well, we really need autoconf 2.52...
# First off, a distrib sanity check..
AC_INIT(mk/config.mk.in)
-dnl * We require autoconf version 2.50 due to the use of AC_SYS_LARGEFILE and AC_MSG_NOTICE
-AC_PREREQ(2.50)
+dnl * We require autoconf version 2.52
+dnl We need 2.50 due to the use of AC_SYS_LARGEFILE and AC_MSG_NOTICE.
+dnl We need 2.52 due to the use of AS_TR_CPP and AS_TR_SH.
+AC_PREREQ(2.52)
dnl * Declare subdirectories that have a private configure script
dnl